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Cortex-M4

DavidBrownell9026
Intellectual 870 points
It appears that the M4 has been announced and that TI has licensed it. In fact, from the ARM website, I see:

The Cortex-M4 processor makes PID loops and upper level motion control work better and more reliably, enhancing a developer's ability to achieve high levels of energy conservation through efficient motor control,” said Jean Anne Booth, director of worldwide Stellaris® MCU marketing, Texas Instruments Incorporated. “It also opens up ARM MCU usage to the broad world of non-programmers using meta-language tools such as LabVIEW, and Matlab/Simulink. In addition, it allows natural and native C and C++ applications to be used, saving time and risk by using the same algorithm on both the deeply embedded system and the workstation, phone and general embedded processor.

The M4 builds on the M3 by including some DSP-ish instructions (at least a MAC), and optionally supports floating point.

This is all making me curious. Surely there's something more to be said about Stellaris and M4 support. I wouldn't necessarily expect announcements yet, or products before next year (at least in quantity). But surely there's (soon to be?) at least a little more information available. Some of it rumors; some of it more solid than that... here's a thread for such stuff. Have at it! :)
  • Genius 4070 points
    This whole forum is really a legacy from the days when Luminay Micro was a separate entity. The stated intent is that it will all become part of the "main" TI "community" (hence the bugs not getting fixed).

    Therefore I imagine that totally new stuff like this should start on the TI forums, rather than here?
  • Intellectual 870 points
    Therefore I imagine that totally new stuff like this should start on the TI forums, rather than here?

    You might think that. In fact, ISTR statements that the switchover to forums at "ti.com" would happen in December. But there doesn't seem to be significant discussion of Stellaris parts over there. And there aren't even Stellaris forums of any kind under their "ARM Processors" or "Microcontrollers" topic groupings.

    Meanwhile, I've seen posts here from Jean Anne (who was quoted in ARM's press release), and this "legacy" forum does indeed seem to be where such stuff gets discussed. So I don't think those forums would currently be more appropriate.
  • Intellectual 590 points
    New Cortex-M4 parts would be nice to see, but I'd prefer TI to upgrade the current M3 parts first. NXP has leapfrogged TI with their LPC17xx line and, although I've been hearing about new Luminary chips for a while now, nothing has been announced.
  • Mastermind 7850 points
    Hi,

    I am in a process of selecting microcontroller for a new project. Looking at Cortex-M3 from NXP, ST and TI.
    The forum here looks less responsive than other forums (NXP and ST ones).For example I didn't get any answer to my last quesion.
    Maybe switching completely to TI E2E will change it for better.
    After what you said my decision (the microcontroller choice) is even more dificult.

    Regards
    Jan
  • TI__Intellectual 2680 points
    I can confirm that's there is a lot of new development activity going on with Stellaris within TI. Obviously, a public forum like this is a great place to get help with publicly announced products, but it's not a good place for us to discuss unannounced products. I'd suggest having those discussions directly with a distributor or TI sales.